body, html
  line-height: 1
  font-weight: 200
  font-family: 'PingFang SC', 'STHeitiSC-Light', 'Helvetica-Light', arial, 'sans-serif'
  
.clearfix
  display: inline-block
  &:after
    display:block
    content:'.'
    height:0
    line-height:0
    clear:both
    visibility: hidden
  
@media (-webkit-min-device-pixel-ratio: 1.5),(min-device-pixel-ratio: 1.5)
	.border-1px
		&::after
			-webkit-transform: scaleY(0.7)
			transform: scaleY(0.7)

@media (-webkit-min-device-pixel-ratio: 2),(min-device-pixel-ratio: 2)
	.border-1px
		&::after
			-webkit-transform: scaleY(0.5)
			transform: scaleY(0.5)
   	
